.support-layout {
    display: grid;
    grid-template-columns: 210px minmax(0, 1fr);
    align-items: start;
    gap: 42px;
    width: min(1180px, calc(100% - 40px));
    margin: 46px auto 80px;
    box-sizing: border-box;
}

.support-layout *,
.support-layout *::before,
.support-layout *::after {
    box-sizing: border-box;
}

.support-navigation {
    position: sticky;
    top: 24px;
    min-width: 0;
    overflow: hidden;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
}

.support-navigation-title {
    display: block;
    padding: 22px 20px 18px;
    color: #1f2d43;
    border-bottom: 1px solid #e8edf2;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.support-navigation-list {
    display: grid;
    gap: 4px;
    margin: 0;
    padding: 10px;
    list-style: none;
}

.support-navigation-link {
    display: flex;
    min-height: 44px;
    align-items: center;
    padding: 10px 13px;
    color: #526078;
    border-left: 3px solid transparent;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 650;
    line-height: 1.4;
    text-decoration: none;
    transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

a.support-navigation-link:hover {
    color: var(--tripbora-primary-hover);
    background: #f8f5ff;
}

a.support-navigation-link:focus-visible {
    outline: 3px solid var(--tripbora-focus);
    outline-offset: 2px;
}

.support-navigation-link.is-active {
    color: var(--tripbora-primary-hover);
    background: var(--tripbora-soft);
    border-left-color: var(--tripbora-primary);
    font-weight: 800;
}

.support-navigation-link.is-disabled {
    color: #a0a8b5;
    background: #fafbfc;
    cursor: default;
}

.support-layout-content {
    min-width: 0;
}

@media (max-width: 900px) {
    .support-layout {
        grid-template-columns: minmax(0, 1fr);
        gap: 28px;
    }

    .support-navigation {
        position: static;
        overflow-x: auto;
        border-radius: 12px;
    }

    .support-navigation-title {
        padding: 16px 16px 12px;
        border-bottom: 0;
        font-size: 17px;
    }

    .support-navigation-list {
        display: flex;
        min-width: max-content;
        gap: 6px;
        padding: 0 10px 10px;
    }

    .support-navigation-link {
        min-height: 40px;
        padding: 8px 12px;
        border-left: 0;
        border-bottom: 3px solid transparent;
        white-space: nowrap;
    }

    .support-navigation-link.is-active {
        border-bottom-color: var(--tripbora-primary);
    }
}

@media (max-width: 680px) {
    .support-layout {
        width: min(100% - 30px, 620px);
        gap: 24px;
        margin-top: 32px;
    }
}